Are Fish Self Regulating In A Small Pond?

Hello Mark I never got to see this video I waited 15 min. I think it has some control for there size but as far as there young they will eat them.PS let me know if Iam right or wrong thank you Rene

i have a 2500 gallon pool with large koi about 100 lbs with a 1700 gallon pool filled with water hyacinths(no fish)no filter with a very small pump constantly circulating water through this and emptying back into koi pool o ammonia and 0 nitrites and some fish exceed 15 lbs and still growing.the secret aeration 2 air pumps and 2 nine inch diffusers. so yes fish can be very crowded by my method which has been working for years, AERATION AND WATER HYACINTHS TO REMOVE UNWANTED CHEMICALS.I FEED A LARGE AMOUNT OF FLOATING GAME FISH FOOD PLUS A LARGE AMOUNT OF SMALL FLOATING PLANTS TWICE DAILY.

Hi Sarah,
This number can vary a good bit based on things like this, and as noted by Roger above, plants, filtration, etc. Many things can help with the holding capacity of a pond. Keep in mind that a lot of our work here is in regards to algae…so if a pond has algae, water quality issues, etc…fish are certainly one place to evaluate.

Mark,

We have a 10,000 gal water feature that includes 4 ponds (2 to 3.5′ deep, 2 at 12″), 150′ of connecting streams, 1 waterfall at 4′ and a spillway at 4″.

Two questions?: 1) you made a distinction between “gold fish” and “koi”… is that based on fish size, genetics, color, or what? Our fish are assorted colors from solid “gold” (red/orange), to white, to a creamy yellow, and some blotchy white and “gold”… So the question, do I have “gold fish” or “Koi” or both?

2) you make a distinction between a small pond, and large ponds… which is ours?

Thanks for all the helpful videos and comments.